Robot

Abstract

A modular movable robot includes a lower plate provided with a traveling unit, an upper plate spaced above the lower plate, a plurality of lower supporting frames vertically elongated between the lower plate and the upper plate, a top plate spaced above the upper plate, a plurality of upper supporting frames vertically elongated between the upper plate and the top plate, and a housing surrounding edges of the lower plate, the upper plate, and the top plate. A longitudinal length of the housing is longer than a horizontal width of the housing.

What is claimed is: 
     
       1. A robot comprising:
 a first plate, at least one wheel that rotates to move the robot being coupled to the first plate; 
 a second plate positioned above the first plate; 
 a plurality of first support posts provided between the first plate and the second plate; 
 a third plate positioned above the second plate; and 
 a plurality of second support posts provided between the second plate and the third plate, 
 wherein a longitudinal length of the first plate is greater than a horizontal width of the first plate, 
 wherein the robot further comprises:
 a battery positioned between the second plate and the third plate; 
 a front sensor provided at a front side of the first plate and positioned between the first plate and the second plate; 
 a rear sensor provided at a rear side of the first plate and positioned between the first plate and the second plate; 
 a housing provided around sides of the first plate, the second plate, and the third plate, the housing including:
 a front opening at a front side of the housing; and 
 a rear opening at a rear side of the housing, the front sensor detecting a region in front on the robot through the front opening, and the rear sensor detecting a region behind the robot through the rear opening; 
 
 a controller positioned in front of the battery; and 
 a fan provided below the controller, 
 
 wherein air blown by the fan is discharged through the front opening, and 
 wherein the second plate includes a cutout to receive the fan. 
 
     
     
       2. The robot according to  claim 1 , wherein the at least one wheel includes a driving wheel rotating about a driving shaft, and
 wherein the robot further comprises:
 a motor that outputs a rotational force at a rotational shaft that is separated from the driving shaft; and 
 gearing provided between the rotational shaft and the driving shaft to transfer the rotational force of the motor to the driving wheel. 
 
 
     
     
       3. The robot according to  claim 2 , wherein the first plate includes a cutout to receive the motor, the driving shaft, and the gearing. 
     
     
       4. The robot according to  claim 1 , wherein the at least one wheel includes:
 a first driving wheel rotating about a first driving shaft; 
 a second driving wheel rotating about a second driving shaft, the first driving wheel and the second driving wheel being positioned such that the first driving shaft and the second driving shaft have a common rotational axis, and 
 wherein the robot further comprises:
 a first motor that outputs rotation force at a first rotational shaft that is separated from the first driving shaft; 
 first gearing provided between the first rotational shaft and the first driving shaft to transfer the rotational force of the first motor to the first driving wheel; 
 a second motor that outputs rotation force at a second rotational shaft that is separated from the second driving shaft; and 
 second gearing provided between the second rotational shaft and the second driving shaft to transfer the rotational force of the second motor to the second driving wheel, 
 wherein the first rotational shaft is positioned between a front end of the first plate and the first driving shaft and the second driving shaft, and the second rotational shaft is positioned between a rear end of the first plate and the first driving shaft and the second driving shaft. 
 
 
     
     
       5. The robot according to  claim 4 , wherein the one or more wheels further include:
 at least one front caster provided below the first plate and in front of the common rotational axis of the first driving shaft and the second driving shaft; and 
 at least one rear caster provided below the first plate and behind the common rotational axis of the first driving shaft and the second driving shaft. 
 
     
     
       6. The robot according to  claim 1 , further comprising:
 a printed circuit board (PCB) electrically connected to the controller and positioned between a top surface of the battery and a bottom surface of the third plate; and 
 a communication module electrically connected to at least one of the control box or the PCB and provided between an upper surface of the battery and the bottom surface of the third plate. 
 
     
     
       7. The robot according to  claim 1 , further comprising:
 a housing provided around sides of the first plate, the second plate, and the third plate, 
 wherein
 the housing includes a first material having a first thermal conductivity, and 
 at least one of the first plate, the second plate, the third plate, the first support post, or the second support post includes a second material having a second thermal conductivity that is higher than the first thermal conductivity of the first material.